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61 lines
2.0 KiB
61 lines
2.0 KiB
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <jni.h>
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#include "AudioSource.h"
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//TODO - Probably wrap the JNI handling in a class with a pointer held in the Java Object
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// so as to support multiple instances... maybe.
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// JNI Stuff
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static float* sAudioBuffer;
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extern "C" {
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JNIEXPORT void JNICALL
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Java_org_hyphonate_megaaudio_player_NativeAudioSource_initN(
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JNIEnv *env, jobject thiz, jlong native_source_ptr, jint num_frames, jint num_chans) {
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sAudioBuffer = new float[num_frames * num_chans];
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}
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JNIEXPORT void JNICALL
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Java_org_hyphonate_megaaudio_player_NativeAudioSource_resetN(
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JNIEnv *env, jobject thiz, jlong native_source_ptr) {
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// TODO: implement reset()
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}
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JNIEXPORT void JNICALL
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Java_org_hyphonate_megaaudio_player_NativeAudioSource_triggerN(
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JNIEnv *env, jobject thiz, jlong native_source_ptr) {
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AudioSource* audioSource = (AudioSource*)native_source_ptr;
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audioSource->trigger();
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}
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JNIEXPORT jint JNICALL
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Java_org_hyphonate_megaaudio_player_NativeAudioSource_pullN(
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JNIEnv *env, jobject thiz, jlong native_source_ptr,
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jfloatArray audio_data, jint num_frames, jint num_chans) {
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AudioSource* audioSource = (AudioSource*)native_source_ptr;
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int numFrames = audioSource->pull(sAudioBuffer, num_frames, num_chans);
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// Convert to Java float[]
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env->SetFloatArrayRegion(audio_data, 0, numFrames * num_chans, sAudioBuffer);
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return numFrames;
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}
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} // extern "C"
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